﻿using System;

public class Class1
{
	public Class1()
	{
        static void Main(string[] args)
        {
            float result = 0.0;
            for (float i = 1.0; i <= 97.0; i += 2.0)
            {
                result += i / (i + 2.0);
            }
            Console.write();
        }

    }
}
